CVE-2026-11961: CWE-269 Improper Privilege Management in User Registration & Membership
The User Registration & Membership WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.
AI Analysis
Technical Summary
The User Registration & Membership plugin for WordPress versions prior to 5.2.3 does not properly validate the membership tier submitted during public registration. This lack of validation allows unauthenticated attackers to register with any published membership tier, thereby gaining the associated user role. If an administrator tier is published, attackers can escalate privileges to administrator level. This vulnerability is classified under CWE-269 (Improper Privilege Management). No CVSS score or patch information is currently available.
Potential Impact
Unauthenticated users can exploit this vulnerability to assign themselves arbitrary membership tiers, potentially escalating their privileges up to administrator level. This can lead to full control over the affected WordPress site, including the ability to modify content, manage users, and alter site configurations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict public registration or disable the plugin if possible. Monitor for vendor updates regarding patches or official mitigations.
CVE-2026-11961: CWE-269 Improper Privilege Management in User Registration & Membership
Description
The User Registration & Membership WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.
CVSS v3.1
Score 8.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The User Registration & Membership plugin for WordPress versions prior to 5.2.3 does not properly validate the membership tier submitted during public registration. This lack of validation allows unauthenticated attackers to register with any published membership tier, thereby gaining the associated user role. If an administrator tier is published, attackers can escalate privileges to administrator level. This vulnerability is classified under CWE-269 (Improper Privilege Management). No CVSS score or patch information is currently available.
Potential Impact
Unauthenticated users can exploit this vulnerability to assign themselves arbitrary membership tiers, potentially escalating their privileges up to administrator level. This can lead to full control over the affected WordPress site, including the ability to modify content, manage users, and alter site configurations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict public registration or disable the plugin if possible. Monitor for vendor updates regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-06-11T07:56:03.810Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a59dfe668715ace439a8cf7
Added to database: 07/17/2026, 07:55:18 UTC
Last enriched: 07/17/2026, 07:55:45 UTC
Last updated: 08/29/2026, 22:52:08 UTC
Views: 108
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